Anyone knows and give me the solution. Many thanks!!
per default it seems that only root can log into the ftp server
I have forgotten the way how to setup proftpd to login as a normal user
maybe to the users home folder
my web sextoy uy tin gia re
To create a user in proftpd
https://www.linuxquestions.org/questions/linux-software-2/adding-a-new-user-to-proftpd-132250/
Better to create a non-root sudoer
https://www.digitalocean.com/community/tutorials/how-to-create-a-sudo-user-on-ubuntu-quickstart
Crazy easy to do…and highly recommended anyway
Why not use secure copy…SCP which uses SSH and port 22
However you have to use Openssh rather than Dropbear